1. Planning for Excellence in High School Science, National Science Teachers Association, Washington, D.C., 1961.
2. “Science Education for Changing Times,” in Rethinking Science Education, 59th Yearbook of the National Society for the Study of Education, Univ. of Chicago Press, Chicago, Illinois, 1960.
3. and , “Research in Science Education,” in Rethinking Science Education, 59th Yearbook of the National Society for the Study of Education, Univ. of Chicago Press, Chicago, Illinois, 1960.
4. , , and , “How the Individual Learns Science,” in Rethinking Science Education, 59th Yearbook of the National Society for the Study of Education, University of Chicago Press, Chicago, Illinois, 1960.
5. Ref. 4, p. 45.